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Posterior tibial tendon

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https://www.readbyqxmd.com/read/29774947/passive-engineering-mechanism-enhancement-of-a-flexor-digitorum-longus-tendon-transfer-procedure
#1
Connor M Pihl, Christina J Stender, Ravi Balasubramanian, Kylie M Edinger, Bruce J Sangeorzan, William R Ledoux
Standard treatments of adult acquired flatfoot deformity (AAFD) fail to correct associated dysfunction of the posterior tibial tendon (PTT). This study aimed to determine if a novel passive engineering mechanism (PEM) enhanced flexor digitorum longus (FDL) tendon transfer procedure would better restore physiologic PTT function to improve AAFD gait parameters compared to standard treatment. We evaluated the kinetic, pedobarographic, and kinematic effects of a pulley-based PEM-enhancement system utilizing a cadaveric flatfoot model and robotic gait simulator...
May 18, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29729803/hallux-valgus-medial-column-instability-and-their-relationship-with-posterior-tibial-tendon-dysfunction
#2
REVIEW
Steven Blackwood, Leland Gossett
Historically, bunions have focused on the coronal plane; however, there is tension and compression failure in the sagittal plane of the midfoot during arch collapse. Correction of all 3 planes of deformity, coronal, sagittal, and rotational, can be achieved in several ways. Taking a big picture of global foot mechanics by recognizing the common types of conditions associated with arch collapse, including hallux valgus deformities, can serve as a useful roadmap for navigating more complicated deformities where hallux valgus exists...
June 2018: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/29700593/neurovascular-and-tendon-injuries-due-to-ankle-arthroscopy-portals-a-meta-analysis-of-interventional-cadaveric-studies
#3
Kaissar Yammine, Chahine Assi
Neurovascular and tendon structures are considered at risk when performing ankle arthroscopy. Injury rate and distance from portals to such structures varied in the literature. The aim of this meta-analysis is to evaluate the injury risk of these structures in terms of proximity and injury prevalence. Thirteen studies including 184 cadaveric ankle arthroscopy procedures met the inclusion criteria. The antero-central portal exhibited the highest frequencies of nerve/vessel proximity and nerve/vessel missed injuries...
April 26, 2018: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/29663091/anatomical-feasibility-study-of-flexor-hallucis-longus-transfer-in-treatment-of-achilles-tendon-and-posteromedial-portal-of-ankle-arthroscopy
#4
Haijiao Mao, Linger Wang, Wenwei Dong, Zhenxin Liu, Weigang Yin, Dachuan Xu, Keith L Wapner
PURPOSE: The aim of this study was to evaluate the occurrence of anatomical variations of the musculotendinous junction of the flexor hallucis longus (FHL) muscle, the relationship between FHL tendon or muscle and the tibial neurovascular bundle at the level of the posterior ankle joint in human cadavers. METHODS: Seventy embalmed feet from 20 male and 15 female cadavers, the cadavers' mean age was 65.4 (range from 14 to 82) years, were dissected and anatomically classified to observe FHL muscle morphology define the relationship between FHL tendon or muscle and the tibial neurovascular bundle...
April 16, 2018: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/29658814/combined-spring-and-deltoid-ligament-repair-in-adult-acquired-flatfoot
#5
Caio Nery, André Vitor Kerber C Lemos, Fernando Raduan, Nacime Salomão B Mansur, Daniel Baumfeld
BACKGROUND: Adult-acquired flatfoot deformity (AAFD) is usually due to a combination of mechanical failure of the osteoligamentous complex that maintains the medial longitudinal arch of the foot and attenuation or complete tear of the posterior tibial tendon. Magnetic resonance imaging studies in patients with flatfoot deformities have reported the posterior tibial tendon to be pathologic in up to 100% of patients, the spring ligament in up to 87%, and the deltoid ligament in 33%. Many studies in the literature describe reconstruction of the spring ligament or the deltoid ligament associated with AAFD, but there is no study in which both (spring and deltoid) ligaments are reconstructed at the same time...
April 1, 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29644885/short-to-mid-term-outcomes-following-the-use-of-an-arthroereisis-implant-as-an-adjunct-for-correction-of-flexible-acquired-flatfoot-deformity-in-adults
#6
Kempland C Walley, Gearin Greene, Jesse Hallam, Paul J Juliano, Michael C Aynardi
BACKGROUND: The use of an arthroereisis implant for the treatment of adolescent flatfoot deformity has been described. However, data that address the outcomes of patients treated with an arthroereisis implant in adults are limited. The purpose of this study was to investigate the radiographic and clinical outcomes and complications following the use of a subtalar arthroereisis implant as an adjunct for correction acquired flatfoot deformity secondary to posterior tibial tendon dysfunction...
April 1, 2018: Foot & Ankle Specialist
https://www.readbyqxmd.com/read/29609996/surgical-management-of-stage-2-adult-and-pediatric-acquired-flatfoot-without-tendon-transfer-or-arthrodesis-a-retrospective-study
#7
Ashim Wadehra, Lawrence M Fallat, Robert Jarski
Posterior tibial tendon dysfunction (PTTD) is a common pathology of the foot and ankle. Numerous techniques are available to reconstruct the flatfoot. Fusions and tendon transfers are popular methods; however, a wide range of complications have been associated with these procedures. The objective of the present study was to demonstrate the outcomes of reconstructive surgery for flatfoot correction without tendon transfer or arthrodesis. We performed a retrospective study of 43 patients and 56 feet who had undergone flatfoot reconstructive surgery from November 2011 to June 2016, with a mean follow-up period of 60 weeks (range 12 to 60 months)...
March 30, 2018: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29589970/imaging-of-the-tibionavicular-ligament-and-its-potential-role-in-adult-acquired-flatfoot-deformity
#8
Neal Ormsby, Gillian Jackson, Paul Evans, Simon Platt
BACKGROUND: The spring ligament is an important medial arch stabilizer. However, when disrupted, it does not cause planovalgus deformity until the foot is cyclically loaded. We propose that the tibionavicular (TN) ligament plays an important role. However, this ligament is not imaged in routine magnetic resonance imaging (MRI) sequences. METHODS: A prospective case-control study using a novel MRI sequence to image the TN ligament in 20 normal feet creating a baseline appearance of the ligament...
March 1, 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29574163/tibial-tunnel-widening-associated-with-anterior-cruciate-ligament-reconstruction-using-autogenous-hamstrings-a-comparison-between-antero-medial-portal-and-transtibial-techniques
#9
J Silberberg Muiño, A Nilo Fulvi, G Vera, J L Gutiérrez García, M Giménez Salvay, M Maroa Salvucci, A Ruiz Ollero
OBJECTIVE: Evaluate the enlargement effect of the tibial tunnel emergence of 2 different of anterior cruciate ligament reconstruction techniques: antero-medial portal (AMP) vs. transtibial (TT) technique. METHODS: A prospective, randomized controlled study was performed in 36 consecutive patients who underwent anterior cruciate ligament reconstruction with autologous hamstring tendon grafts employing the AMP and conventional TT techniques. Lateral and antero-posterior radiographs were obtained for each patient at 6 weeks and 12 months postoperatively...
March 21, 2018: Revista Española de Cirugía Ortopédica y Traumatología
https://www.readbyqxmd.com/read/29552479/articulated-bone-block-for-posterior-cruciate-ligament-reconstruction-using-bone-patellar-tendon-bone-autograft-surgical-technique-to-facilitate-graft-passage
#10
Ramón Cugat, Eduard Alentorn-Geli, Xavier Cuscó, Jordi Navarro, Gilbert Steinbacher, Pedro Álvarez-Díaz, Roberto Seijas, David Barastegui, Montse García-Balletbó
Posterior cruciate ligament reconstruction using the transtibial technique provides successful clinical outcomes. However, a bone-patellar tendon-bone (BTB) autograft with the transtibial technique has not been used by some surgeons because of concerns with graft passage from the tibial to the femoral tunnels (sharp turn) that can damage graft fibers. In the present surgical technique, an arthroscopic, transtibial, single-bundle technique for posterior cruciate ligament reconstruction using the BTB autograft with an easy and effective technical tip to facilitate graft passage is presented...
February 2018: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29548734/the-patella-a-mechanical-determinant-of-coordination-during-vertical-jumping
#11
Daniel John Cleather
The patella is traditionally understood to be a "joint spacer" that increases the moment arm of the patellar tendon. This characterisation is unsatisfactory as it fails to explain the more interesting characteristics of the patella: 1) that the changing pivot point of the patella causes the ratio of quadriceps to patellar tendon force to almost double as the knee flexes; 2) that the patellar tendon exerts an anteriorly directed force on the tibia when the knee is extended but this switches to a posterior draw as the knee flexes; and 3) that the presence of the patella allows the quadriceps to exert different moments on the femur and tibia...
March 13, 2018: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/29532899/matrix-metalloproteinase-1-mmp-1-and-mmp-8-gene-polymorphisms-promote-increase-and-remodeling-of-the-collagen-iii-and-v-in-posterior-tibial-tendinopathy
#12
Tulio Diniz-Fernandes, Alexandre Leme Godoy-Santos, Maria Cristina Santo, Pedro Pontin, Caio Augusto Alves Pereira, Yuri Justi Jardim, Ana Paula Pereira Velosa, Nicola Maffulli, Walcy Rosolia Teodoro, Vera Luiza Capelozzi
Posterior tibial tendinopathy (PTT) can lead to acquired flatfoot in adults. Many patients develop PTT without any identifiable risk factors. Molecular changes in extracellular matrix (ECM) and matrix metalloproteinase (MMP) polymorphism may influence the risk of developing PTT. We aim to investigate the association between matrix metalloproteinase-1 (MMP-1) and (MMP-8) gene polymorphisms with changes in collagen I, III and V in PTT. A case-control study with 22 patients and 5 controls was performed. The MMP-1 (2G/2G) and MMP-8 (T/T) genotypes were determined by PCR-restriction fragment length polymorphism...
March 13, 2018: Histology and Histopathology
https://www.readbyqxmd.com/read/29528722/biomechanical-evaluation-of-circumtibial-and-transmembranous-routes-for-posterior-tibial-tendon-transfer-for-dropfoot
#13
Emilio Wagner, Pablo Wagner, Diego Zanolli, Rubén Radkievich, Gunther Redenz, Rodrigo Guzman
BACKGROUND: Tibialis posterior tendon transfer is performed when loss of dorsiflexion has to be compensated. We evaluated the circumtibial (CT), above-retinaculum transmembranous (TMAR), and under-retinaculum transmembranous (TMUR) transfer gliding resistance and foot kinematics in a cadaveric foot model during ankle range of motion (ROM). METHODS: Eight cadaveric foot-ankle distal tibia specimens were dissected free of soft tissues on the proximal end, applying an equivalent force to 50% of the stance phase to every tendon, except for the Achilles tendon...
March 1, 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29471559/-suturing-an-acute-acl-lesion-with-dynamic-intraligamentary-stabilisation
#14
Christoph Ihle, H Nakayama, Christoph Gonser, Ulrich Stöckle, Stefan Döbele, Steffen Schröter, Marc-Daniel Ahrend, Atesch Ateschrang
BACKGROUND: The established surgical technique for lesion of the anterior cruciate ligament (ACL) is reconstruction with an autologous tendon. However, patients after ACL-replacement have increased osteoarthritis rates. Possible explanations are persistent knee instability and the loss of the ACL's proprioceptive function. Therefore, surgeons have developed an alternative treatment to preserve the ACL by readapting femoral ACL lesions by temporary protective dynamic intraligamentary stabilisation (DIS)...
February 2018: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/29451811/role-of-tendoscopy-in-treating-stage-ii-posterior-tibial-tendon-dysfunction
#15
Alessio Bernasconi, Francesco Sadile, Matthew Welck, Nazim Mehdi, Julien Laborde, François Lintz
BACKGROUND: Stage II tibialis posterior tendon dysfunction (PTTD) resistant to conservative therapies is usually treated with invasive surgery. Posterior tibial tendoscopy is a novel technique being used in the assessment and treatment of posterior tibial pathology. The aims of this study were (1) to clarify the role of posterior tibial tendon tendoscopy in treating stage II PTTD, (2) to arthroscopically classify spring ligament lesions, and (3) to compare the arthroscopic assessment of spring ligament lesions with magnetic resonance imaging (MRI) and ultrasonographic (US) data...
April 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29419689/surgical-reconstruction-of-the-fascia-lata-and-posterior-tibial-artery-perforator-flap-to-treat-children-with-simultaneous-injury-to-the-achilles-tendon-and-heel-skin
#16
Chu-Zhao Lin, Xue Xia, Hu Wang, Dong-Xin Liu
Children with simultaneous injury to the Achilles tendon and heel skin remain a challenge for clinicians. The purpose of this study is to evaluate a combined surgical procedure involving use of the fascia lata to reconstruct the Achilles tendon, and the posterior tibial artery perforator flap to cover the accompanying heel skin injury.Between February 2010 and February 2013, 8 children (3 females and 5 males) between 3 and 12 years of age, with a median age of 7.5 years, were hospitalized in the First Affiliated Hospital of Shantou University Medical College...
February 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29416985/posterior-tibial-tendon-endoscopic-debridement-for-stage-i-and-ii-posterior-tibial-tendon-dysfunction
#17
Jeffrey Wake, Kevin Martin
Adult acquired flatfoot deformity (AAFD), formerly known as posterior tibial tendon (PTT) dysfunction, is one of the most common problems of the foot and ankle. It was first described as tendon failure but has since been revealed as ligamentous failure in addition. AAFD is a spectrum of deformities that ranges from tenosynovitis (stage I) to AAFD (stages II-IV). Regarding mild stage I and stage II disease, it was once standard to perform an open synovectomy completely removing the inflamed synovium; this procedure required a large 6-cm medial ankle incision...
October 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29413770/results-of-subtalar-arthroereisis-for-posterior-tibial-tendon-dysfunction-stage-iia1-based-on-35-patients
#18
Antonio Viladot Voegeli, Nicolás Fontecilla Cornejo, Juan Andrés Serrá Sandoval, Fernando Alvarez Goenaga, Ramón Viladot Pericé
BACKGROUND: The aim of the study was to evaluate the clinical and radiological results obtained in the treatment of adult flexible flatfoot secondary to posterior tibial dysfunction with subtalar arthroereisis using a Kalix ® endorthesis. METHODS: 35 patients (37 feet) were studied, having been operated between January 2010 and January 2015 for reducible flatfoot secondary to posterior tibial tendon dysfunction stage IIA1 of Bluman. RESULTS: The average follow up was 47...
February 2018: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29409252/arthroscopic-approach-to-the-spring-calcaneonavicular-ligament
#19
T H Lui, C Y D Mak
BACKGROUND: This research studied the safety and efficacy of a new portal to the spring ligament. This portal is located just plantar to the insertion of the posterior tibial tendon and above the fibrous septum between the posterior tibial and the flexor digitorum longus tendons. METHODS: Twelve fresh frozen foot and ankle specimens were used. The distance between the accessory medial portal and the medial plantar nerve was measured. The relation between the medial plantar nerve and the spring ligament was studied...
March 8, 2017: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29409235/the-arthroereisis-procedure-in-adult-flexible-flatfoot-grade-iia-due-to-insufficiency-of-posterior-tibial-tendon
#20
P Ceccarini, G Rinonapoli, G Gambaracci, M Bisaccia, A Ceccarini, A Caraffa
BACKGROUND: To report on the functional, biomechanical, and radiographic results of patients who had undergone arthroereisis plus tensioning of the posterior tibial tendon for flexible flatfoot. The hypothesis is that arthroereisis associated to a tensioning of the posterior tibial tendon give a good correction with great satisfaction in patients with flexible flatfoot in grade IIA. METHODS: We evaluated 29 patients (31 feet), mean age of 46.4 years, who had been surgically treated for adult flatfoot grade IIA according to Myerson...
April 14, 2017: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
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